Steps to connect to the remote Linux GUI desktop
Install Microsoft Remote Desktop
The Microsoft Remote Desktop can be found from App Store (for Mac users).
Start Microsoft Remote Desktop
The public address (like 18.104.22.168) is used for the PC name.
Add a User Account
The default username is elm and the password is the EC2 instance ID that has the form of i-0c7fadc4dc193eca7.
Accept the certificate
The PC is added
Clicking on the PC will connect to the remote Linux Desktop
Log out of the Linux GUI Desktop